The main fruits of hyper-graph s applications are summarized,the various spatio-temporal data model and spatio-temporal reasoning model are compared.

Spatio-temporal Query Language Based on Spatio-temporal Reasoning and XML;

Composition inference plays an important role in spatio-temporal reasoning,and it s the basic step of other qualitative reasoning such as constraint satisfaction problem.

Based on spatio-temporal reasoning,ontologies,semantic Web and expert system technology,a spatio-temporal information management platform for digital agriculture was built.

Fuzzy reasoning model for osteoma computer-aided diagnosis expert system;

Introduces the following aspects of the medical expert system with a double-layer reasoning model:construction of double-layer reasoning model, deep-layer knowledge acquisition of reason-result relation analysis model, reasoning strategies and explanation function,etc.

Two support vector machine(SVM) reasoning models were established for five areas with abnormal rainfall forecast of 50% excess or less than-50% in Sichuan Basin,using the monthly data of 74 circumfluent eigen values,sea surface temperature index of Nino 3 and Nino 4,index of sea level pressure of 500 HPA and 100 HPA height from 1958 to 2003.

Manage to introduce model reasoning method into developing course for a typical kind of SQL query statements(equality comparison SQL query statements);in order to make developers have rules to follow in the developing course of this kind of SQL query statements,reduce unnessary reasoning trials,ensure correctness of SQL query statements.